Lab Viva 2_Electronics Workshop

If the number of turns in a coil is doubled in the same length and area, the inductance, L, will

• double

• quadruple

• become half

• stay the same

Find the value of the capacitor given above.

• $0.47\ \mu F$

• $.047\ \mu F$

• $4.7\ \mu F$

• $47\ \mu F$

Identify the terminals of BC 547 given above:

• 1- Collector, 2- Base, 3- Emitter

• 1- Collector, 2- Emitter, 3- Base

• 1- Base , 2- Emitter , 3- Collector

• 1- Emitter , 2- Base , 3- Collector

Digital multimeter is used to ___________________ .

• measure AC and DC current, voltage and resistance.

• measure AC current and voltage

• measure DC current, voltage and resistance

• measure DC current and resistance

In a bridge rectifier, the input sine wave is 250sin100πt. The output ripple frequency will be _________

• 100 Hz

• 50 Hz

• 200 Hz

• none of the above

Identify the correct statement for the component given above:

• The cathode lead is longer. It goes to the negative rail.

• The cathode lead is shorter. It goes to the negative rail.

• The cathode lead is shorter. It goes to the positive rail.

• The cathode is lead is longer. It goes to the positive rail.

Identify the component given above:

• Electronic Fuse

• Electromechanical Relay

• Heat sink

• DPDT switch

A Zener diode, having breakdown voltage equal to 15 V, is used in a voltage regulator circuit shown in the figure above. The current through the diode is:

• 5 mA

• 10 mA

• 15 m A

• 20 mA

For a transistor the parameter  $\beta$ = 99. The value of the parameter $\alpha$  is

• 1

• 9

• .9

• .99

DSO stands for:

• Dual System Oscillator

• Dual Storage Oscillator

• Digital System Oscilloscope

• Digital Storage Oscilloscope